如何在R中找到对象大小？
要找到R中的对象大小，我们可以使用object.size函数。例如，如果我们有一个名为df的数据帧，则可以使用command查找df的大小。类似地，如果我们有一个向量，说x，那么它的大小可以使用来找到，对于矩阵M，它可以是。object.size(df)object.size(x)object.size(M)
例1
考虑以下数据帧-
x<-rnorm(20,31,1.2) y<-rnorm(20,11,1.02) df<-data.frame(x,y) df输出结果
x y 1 30.18391 11.927555 2 31.48452 12.532072 3 30.90274 10.478366 4 31.29327 12.735495 5 30.85212 11.633302 6 30.95957 10.577667 7 31.93196 10.688302 8 31.44202 9.357698 9 30.71209 10.485640 10 29.59055 9.758622 11 30.05166 10.119274 12 29.53356 10.570536 13 29.59849 10.419844 14 32.09375 9.422259 15 30.68645 10.763395 16 30.72715 10.302399 17 30.35040 10.029052 18 30.67613 11.189120 19 31.17024 10.881544 20 31.16995 10.292045
找到df的大小-
object.size(df)
1168 bytes
例2
M<-matrix(rpois(40,2),ncol=2) M输出结果
[,1] [,2] [1,] 3 5 [2,] 1 1 [3,] 3 1 [4,] 1 2 [5,] 1 3 [6,] 4 1 [7,] 3 2 [8,] 3 5 [9,] 2 1 [10,] 0 2 [11,] 2 2 [12,] 0 1 [13,] 2 2 [14,] 3 1 [15,] 2 1 [16,] 2 3 [17,] 3 1 [18,] 4 3 [19,] 0 3 [20,] 2 0
找出M的大小-
object.size(M)
376 bytes
范例3
Vector<-rnorm(80) Vector输出结果
[1] 1.874798574 3.065711367 -0.226342501 -1.630640967 1.569689051 [6] 0.010340611 0.630591302 0.221061730 0.266599159 0.495172345 [11] 0.657045262 0.188151147 0.570511487 -0.455648139 0.943430052 [16] -0.379188331 -0.515241888 0.564965055 -0.114529886 -0.972159831 [21] -0.166275879 0.354993827 -0.389982234 0.703511422 -1.774948011 [26] -0.547321086 -0.052452074 -0.287670445 -1.212082503 -0.244187906 [31] -0.805242570 -0.852252853 0.391037408 -1.308186792 -0.822894454 [36] 0.069047146 1.662590914 0.101213549 -0.399347633 -0.148613561 [41] 0.457625125 -1.230497079 -0.121780006 -0.328781186 -0.471229168 [46] 1.511665965 0.777746188 0.231155909 -0.788583104 -1.727187548 [51] 0.098949035 -0.289089709 -0.754034076 0.411708228 -0.887566160 [56] 0.078084085 0.764479490 -0.625264125 0.638523939 -0.618117257 [61] -0.072918196 -1.281682865 0.273314251 0.485498195 2.109233979 [66] -1.066833468 -0.616190594 -1.677801977 1.101293807 0.326469848 [71] -1.074889880 -0.002953253 -0.828648472 -1.056884432 0.376533898 [76] 0.493340182 -0.564361026 1.324335702 1.020498546 -0.938115868
找到Vector的大小-
object.size(Vector)
688 bytes
例子4
List<-list(x1=rnorm(20,3,1),x2=rnorm(20,10,0.35),x3=rnorm(20,35,4.5)) List输出结果
$x1 [1] 3.0269793 4.1576832 2.8207141 2.3934162 3.6544547 3.1525963 1.6441468 [8] 2.6595524 4.4163661 3.2458959 4.2298106 2.4497147 1.8276739 2.5282615 [15] 2.3205322 4.4916580 3.7016272 0.9758272 4.3550665 4.1302657 $x2 [1] 10.585657 9.468228 10.176733 9.610174 9.982476 10.537840 10.187857 [8] 10.478789 10.191026 9.362443 9.717781 9.603388 9.743209 9.748887 [15] 10.050853 10.426557 9.379878 10.021754 9.359991 10.642187 $x3 [1] 41.36769 37.02543 43.35272 34.79868 33.92261 37.14900 39.43643 33.21250 [9] 37.72320 33.59261 30.01434 35.84111 28.34595 31.75667 39.80058 38.52915 [17] 32.73363 41.52872 38.06228 32.51160
找到列表的大小-
object.size(List)
1064 bytes